/Engine/Source/Runtime/Messaging/Public/IMessagingModule.h
Gets all message buses that were created by this module via theCreateBusmethod that are still valid.
All message buses.
[TArray](API\Runtime\Core\Containers\TArray)< [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [IMessageBus](API\Runtime\Messaging\IMessageBus), ESPMode::ThreadSafe > > GetAllBuses() const